Question

up the nose.* vaccines are like medicines, except their purpose is to kick off the bodys own defenses. each vaccine contains tiny traces of the virus it was developed to protect against. it helps the body begin producing the right antibodies. how does this paragraph support a main idea of the article? a it explains when vaccines should be given. b it explains which flu medicine is best. c it explains how vaccines work. d it explains why the flu is dangerous.

Explanation:

The paragraph describes that vaccines contain virus - traces to trigger the body's defense and antibody - production, which is an explanation of how vaccines work.

Answer:

C. It explains how vaccines work.